Christian Gick 2b8744de6e fix(voice): full E2EE bidirectional audio pipeline working ...

- bot.py: track active callers per room; only stop session when last
  caller leaves (fixes premature cancellation when Playwright browser
  hangs up while real app is still in call)

- voice.py: pre-compute 8 HMAC-ratcheted keys from EC's base key so
  decryption works immediately without waiting ~30s for Matrix to
  deliver EC's key-rotation event (root cause of user→bot silence)

- voice.py: fix set_key() argument order (identity, key, index) at all
  call sites — was (identity, index, key) causing TypeError

- voice.py: add audio frame monitor (AUDIO_FLOW) and mute/unmute event
  handlers for diagnostics

- voice.py: update livekit-agents 1.4.2 event names: user_state_changed,
  user_input_transcribed, conversation_item_added

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

2026-02-22 15:17:35 +02:00

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